.error_box{
    display: inline-block;
    width: 30vw;
    height: 60px;
    border-radius: 15px;

    background-color: rgba(255, 0, 0, .7);
    color: #ffffff;

    position: fixed;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);


    text-align: center;
    line-height: 60px;

    animation-name: error_box_disappear;
    animation-delay: 3s;
    animation-duration: 3s;
    animation-fill-mode: forwards;
}

@keyframes error_box_disappear {
    from{
        opacity: 1;
    }

    to{
        opacity: 0;
    }
}
